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Patent number:
Patent Date:
US Patent: 150,687
Screw Cutting Machines
Patentees:
Joseph L. Hall (
exact
or
similar
names) - Cincinnati, Hamilton County, OH
Henry Millward (
exact
or
similar
names) - Cincinnati, Hamilton County, OH
USPTO Classifications:
408/147
,
408/180
,
470/73
Tool Categories:
metalworking machines
:
metal lathes
:
screwcutting lathes
Assignees:
None
Manufacturer:
Not known to have been produced
Witnesses:
Unknown
Patent Dates:
Applied:
Apr. 06, 1874
Granted:
May 12, 1874
Patent Pictures:
USPTO
(New site tip)
Google Patents
Report data errors or omissions to steward Joel Havens
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